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How do I adjust air pressure on a air compressor for paint spray gun.?
How do I adjust air pressure on a Porter Cable C3151 TYPE 1 4.5 Gallon Air Compressor to 40 psi (for paint sprayer) with adjustment knob without having the compressor run all day long? When I try to adjust the pressure the motor will kick on and attempt to build up pressure back to 140 psi. Do I need an inline pressure regulator or am I just doing something wrong. The max inlet pressure on my Kobalt small gravity feed spray gun states 43psi max inlet.
3 Answers
- big fellaLv 78 years agoFavorite Answer
There should be an adjustable pressure regulator on the compressor.Go tto yahoo or google search and type in Porter cable c3151 type 1 4.5 gallon compressor and they will have a diagram showing you where it is.There is a manifold and then the regulator.
- Anonymous8 years ago
yes, an in line pressure regulator will knock it down at the point of use - you will want to keep the tank pressure high to maintain the cfms needed so your pressure doesn't drop off when spraying - the filter the other poster mentioned is a great tip for spray painting - I am surprised that compressor doesn't have 2 regulators to begin with, one for the tank pressure and one for line pressure but all the images just show the one
- Anonymous8 years ago
You should add a separate regulator as well as a moisture/oil filter if you don't want contaminates in your paint film.
